# def speak(msg):
#     print(f"我在说{msg}")
#
#
# def greet(name,msg):
#     print(f"我叫{name}")
#     speak(msg)
#     print("结束了")
#
# greet("张三",'你好')
#
#


def gg_test1():
    print("进入test1")
    test2()
    print("退出test1")


def test2():
    print("进入test2")
    test3()#返回最近调用的位置啊
    print("退出test2")


def test3():
    print("进入test3")
    print("正在执行test3")
    print("退出test3")

test1()